Can you auto populate an RTC Text field based on an Enumerated Attribute?

I have a set of categories that I need to assign to my workitems in RTC, and each category has an associated description that goes with it.

Is it possible in RTC for the value of a Text/Html field to be set based on what I select from the Enumerated category list I have?

I have to output the description in a formal document deliverable and whilst I know I could use logic in RPE to achieve the desired output it would be preferable to have RTC do this automatically and then I can just draw the data from the field in RPE.